During her visit to the human world, Stralight separates from her new friends to explore the mall by herself for a bit.  
But, unused to her new body and its limits, and so busy with sampling the new world’s wonders, she ignores the tell-tale pangs of a full bladder for just one critical moment too long!  
When she realizes what she’s done, the poor girl ducks behind a nearby potted plant in shame, desperately trying to avoid the mall crowd’s notice…  
All the while too nervous and inexperienced to manage to stop herself, and so just continuing to soak her pants and flood her boots!